Harness frame for looms



Feb. 21, 1928. l,"659,7 60

R. J. BARTHOLOMEW HARNESS FRAME FOR LOOMS Filled @Gif 11. 1926 l BY,

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ATroRNEY Patented Feb. 21, 1928.

y unirsi) STATES `PATENT ePrice-f WGRKS, INCORPORATED,

or PENNSYLVANIA.

OF PHLADELPHIA, PENNSYLVANA, A' CORPORATION HARNESS FRAME FOR LOOMS.

Application filed Octoberrll, 1926. Serial I}Io.140,758.*L

v My invention relates to an improvement in ;looms,. and relates specilically to an improvementl in harnessl trames thereof.

. in jlooms as now lconstructed, the trames ,which are suspended lin parallel planesv are arranged side by vside. and in contact with f eachy other. 1 inasmuch astlie 'trames have movement `vertically relatively to each other,

i depending upon the material being woven,

the friction between the trames places a considerable load on the jacks or other lifting device lor the iframe, depending upon the type of loom under-consideration, and it is an object of the present invention to reduce this load to suoli an extent that, the strain on the lifting device `or devices-will be reduced to aminimuimthereby enabling light type looms to weave heavier fabrics than now possible and with no more strain on the mechanism. To accomplish this object, l inter-pose anti-friction devices between adjacent hai-- ness rames, thereby reducing the Vi'riction Y between the harness frames to such an eX tent that the load on the harness motion is reduced to a minimum in lifting the trames while relatively small weights or springs may be employed for lowering the trames.

1n the accompanying drawings, wherein 1 have illustrated an embodiment ci my invent-ion, v j s F ig. 1 shows in elevation a set of harness trames with my improvement applied thereto;

Fig. 2 is an end elevation ol the trames; and l -f Fig. 3 is an enlarged view o-one of the 'trames with part of the same broken away to show details of construction.

Referring to the-drawings in detail, 1, 2 and 3 designate three harness frames adapted to be raised by the jacks 4, 5 and 6, i'e spectively, of a harness motion and' to be pulled down by weights 7, 8, 9 and 10. I have not attempted to show in detail the construction or operation ot the jacks 4, 5 and 6, inasmuch as this constitutesv no pait of my invention. I might mention, however, that the jack l is attached to the frame 1 by the usual flexible connection 11, the jack 5 to the trame 2 by a similar connection 12, and the jack 6 to the frame 1 by a similar Yconnection 13. rlhese connections run over pulleys 14. The operation of the jacks a, 5 and 6 will, as will be apparent, raise the frames, while the lowering ot the frames is accomplished by weights 7, 8, 9 and 10, or

springs, oi other suitable means, as desired.V

As I haveabove pointed out, in looms as now constructed, vthe trames 1,2 and 3 which in actual practice are in parallelrelation, are inV contact with each other, soithat as the frames are raised and lowered relatively to each other, one irame slides over the other and in contact with it. This creates considerable friction and hence'a load on the harness motion, and to prevent contacting of the ramesand at the same time reduce thefric- `tion between the frames, I secure to each end of the frame 1 one or more i'oller brackets 15.

Two have been illustrated. These brackets are set into the trame and held-in ,place by screws 16 or other suitable means. Each bracket carriesa roller 17,*therperipliery ol' which projects a short distance beyond the face of the 'trame adjacent the tace oitl the frame 2, as indicated at 18. rlhese rollers are preferably oil-impregnated, inasmuch as it is desired to eliminate friction as much as possible and owing to the location ci these rollers in proximity to the warp,it will be obvious that the oiling of the rollers after once installed would be very diicult and ob-v jectionable. v

Y The frame 2 is provided with two or more rollers 19 similar to the rollers 17 and carried by brackets secured to the frame, the

same as described in connection with the' frame 1. The peripheries of the rollers 19 project a short distance beyond the face oi the `frame 2 adjacent the frame 3 as indicated at 20.

The'frame 3 will likewise be provided ywith two or more rollers 21 projecting beyond the face thereof if frames additional to frames 1, 2 and 3 are to be employed, as will be understood. Y

It will be apparent from the foregoing that in the raising and lowering of the frames, eli'ected by the jacks Ll, 5 and 6 and weights 7 8, 9 and 10, the frames will be maintained out of contact with each other and be caused tomove on the rollers 17 and 19, andif additional frames are employed on the rollers 21 as well, so that the friction between the trames is reducedto a minimum. This will relieve to a great extent the load on the jacks 4, 5 and 6 or other lifting device employed and enables the size of the ill in 'brackets 'held -to the trames by screws, the

rollers themselves lying` in recesses 22 provided for that purpose in the frames, it will be understood that other means may be devised for mounting the rollers Within the purview of my invention.

I wish it to be understood, also, that the 'number and location oi.' the rollers with respect tothe trames may be varied Within my invention.

What I claim is: l. In combination, arranged in parallel relation and having movement relatively Ito each other, and antifriction rollers carried by the trames and With which the frames contact in their movements.

2. In combination, a plurality of juxtaposed harness ra'mes arranged in parallel a plurality ot frames relation to each other, and an anti-friction of said roller extending or vprojecting be-y yond the tace o-sa-ld trame to prevent contact of theframes with each other.`

4. In combination, a plurality ot-harness Vtrames', a' plurality of brackets set intoV one f of said frames, an oil-impregnated :roller rotatably mounted in said bracket, the pe-v riphery of said yroller 'extending beyond the pla-ne of the face of the frame to Contact with I'one tace of the adjacent frame.

A 5. In a loom, the combination of aiplurality of rectangular harness frames lyingy side by side in parallel relation to leach other, and anti-friction rollers-attached to the ends of said :trames and interposed between the faces of adjacent frames. v f

. -This specification signed this 7th dayof October, 1926. y

ROBERT J. BARTHOLOMEW. 

